Get Income Sources And Deadlines

The client's income sources with every quarterly update deadline HMRC expects of them, their tax return deadlines, and every tax year those cover — each period carrying the tax year it is filed against. HMRC's income source list and its obligations answer different questions and are joined for you, so a source with no deadlines and a ceased source with deadlines but no listing both survive. Deliberately not scoped to a tax year: HMRC answers all of it per client, so a year-scoped call would re-fetch identical data every time the year changed on screen. Filter on the periods' taxYear.